Thank you for your feedback! I was inspired by a board game called "deep blue" (deep sea diving for treasure). I think in hindsight my game is definitely too punishing! In all honestly the way things spawn is purely based on chance. I think I was going for something in a programming sense more true to a slot machine or a lottery scratcher but framed as a "mining game". I also agree smoother drilling would have made for more satisfying game play.
But man thank you again for playing and writing such meaningful feedback! It really means a lot!
I see you made a mining game too as your submission. I'll try it out in a bit here, thank you again!